firmament, branch master Visualization of atmospheric scattering using ray marching Add MIT license 2020-01-20T21:42:17+00:00 Adrian Kummerlaender 2020-01-20T21:42:17+00:00 dfdcb4676acb6978edb9d7365e29159adbc629eb 






Extract OpenCL setup into Renderer
2020-01-20T21:40:44+00:00

Adrian Kummerlaender

2020-01-20T21:40:44+00:00

abbdbe64d12af732983bc11aac772d3d32682bb5












Add README and some preview pictures
2020-01-19T11:17:22+00:00

Adrian Kummerlaender

2020-01-19T11:17:22+00:00

b0b52925fb96e417802f4b390fafc15c8536df2d












Add time to fancy plot output
2020-01-11T22:27:37+00:00

Adrian Kummerlaender

2020-01-11T22:27:37+00:00

6baf0efe03f30e8d2baa9e9cf64eb919864a1081












Mark exaxt sun direction in fancy fisheye plot
2020-01-11T22:04:56+00:00

Adrian Kummerlaender

2020-01-11T22:04:56+00:00

0ff3c30621589f9e6d1d05d146adf5952382db34












Fix west / east order
2020-01-11T21:54:01+00:00

Adrian Kummerlaender

2020-01-11T21:54:01+00:00

1e5eba2da524e258345eb9796819200ee7052f8e












Add version of local fisheye sunrise with fancy plotting
2020-01-11T20:12:40+00:00

Adrian Kummerlaender

2020-01-11T20:12:40+00:00

071bc3e6439d7775e9684dfeeb27d423d47167a9












Fix noon-dependent sun direction sign conversion
2020-01-11T14:57:20+00:00

Adrian Kummerlaender

2020-01-11T14:57:20+00:00

fa18daffb246fd8f48963ebdc0f791b91c88d08e












Implement basic fish eye view
2020-01-11T13:00:46+00:00

Adrian Kummerlaender

2020-01-11T13:00:46+00:00

b189cb5ed36764bbb8ac9614ba14a2d330e654e0












Implement model for local sun direction
2020-01-10T17:10:35+00:00

Adrian Kummerlaender

2020-01-10T17:10:35+00:00

1d4b7059aa969875dbd4904c8a6980afdb39f647

`local_sunrise.py` renders the sky for a given time and place on earth.





`local_sunrise.py` renders the sky for a given time and place on earth.







Calculate Rayleigh coefficients using Nishita and Hillaire
2020-01-09T20:23:18+00:00

Adrian Kummerlaender

2020-01-09T20:23:18+00:00

073fe4643e0616694a3d390da6d7dcfd3af120f3

i.e. plugging the values for n and N given in [1, Sec. 3.3] into eqs. (1) resp. (3) given by [2].

[1]: Hillaire. “Physically Based Sky, Atmosphere and Cloud Rendering in Frostbite”
[2]: Nishita et. al. “Display of the Earth Taking into Account Atmospheric Scattering”





i.e. plugging the values for n and N given in [1, Sec. 3.3] into eqs. (1) resp. (3) given by [2].

[1]: Hillaire. “Physically Based Sky, Atmosphere and Cloud Rendering in Frostbite”
[2]: Nishita et. al. “Display of the Earth Taking into Account Atmospheric Scattering”







Fix exposure value in bluedot example
2020-01-09T14:21:15+00:00

Adrian Kummerlaender

2020-01-09T14:18:18+00:00

ace393dbc86ad332c0ecd374157640cbbd909938












Replace subscripted vector access
2020-01-09T13:44:43+00:00

Adrian Kummerlaender

2020-01-09T13:44:43+00:00

ed54f6f987decbbaefd59eee32326c750a3f2896

Supported by Intel OpenCL but not by Nvidia





Supported by Intel OpenCL but not by Nvidia







Fix Rayleigh and Mie phase functions
2020-01-08T12:56:03+00:00

Adrian Kummerlaender

2020-01-08T12:56:03+00:00

fa280a8ed69243b8691e44a068d38c249dbbd3cf












Improve structure, play around with phase functions
2020-01-03T17:34:18+00:00

Adrian Kummerlaender

2020-01-03T13:09:40+00:00

51d4f8162df01225e096d24971e8c8335b8c8371












Basic sky rendering using the model by Nishita et al.
2019-12-19T12:18:41+00:00

Adrian Kummerlaender

2019-12-19T12:07:02+00:00

923ad5e83be561dcadfec113177cd7cbcaea56d9

See "Display of the earth taking into account atmospheric scattering" (Nishita et al., 1993)

`bluedot.py` renders the full earth disk while rotating the sun around it.

`sunrise.py` renders the rise of the sun.

Physical model constants may be changed in `planets.py`.





See "Display of the earth taking into account atmospheric scattering" (Nishita et al., 1993)

`bluedot.py` renders the full earth disk while rotating the sun around it.

`sunrise.py` renders the rise of the sun.

Physical model constants may be changed in `planets.py`.